Possible Answer to MPG Variance between 04-05 and 06+ Models

**Tideland Prius** · 02-10-2007, 03:42 AM

I got this off Louisaudette from ToyotaNation who said he got it off his dealer.

"The mpg calculator for the 2005 Prius got input from measuring the angle of depression of the accelerator pedal. That has been changed. The 2007 uses a measurement of air volume taken into the engine, as a more accurate indicator of engine load and consumption. According to my dealer, 2007s tend to have a more consistent agreement between displayed mpg on the screen and mpg calculated at the pump, and the reported mpg performance is about 5% lower than that shown on the 2005s."

Can Galaxee or Rick57 confirm this?

If so, this might be an answer to those who traded their 04/05 model for an 06+ model and wondered why their mpg is so different.

**efusco** · 02-10-2007, 04:30 AM

I thought it was calculated from fuel flow to cylinder #1.

KTPhil · 02-10-2007, 10:33 AM

"he got it off his dealer."

...the LEAST accurate source of informatin on the planet.

**Tideland Prius** · 02-10-2007, 01:54 PM

<shrug> Don't shoot the messenger....<_<

KTPhil · 02-10-2007, 04:28 PM

Nahh, it's the dealers most of us want to shoot!

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02-10-2007, 03:42 AM	#1
Tideland Prius Super Moderator Join Date: Oct 2004 Location: Canada Posts: 13,370 My Car: 2005 Prius Package: B Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 10	I got this off Louisaudette from ToyotaNation who said he got it off his dealer. "The mpg calculator for the 2005 Prius got input from measuring the angle of depression of the accelerator pedal. That has been changed. The 2007 uses a measurement of air volume taken into the engine, as a more accurate indicator of engine load and consumption. According to my dealer, 2007s tend to have a more consistent agreement between displayed mpg on the screen and mpg calculated at the pump, and the reported mpg performance is about 5% lower than that shown on the 2005s." Can Galaxee or Rick57 confirm this? If so, this might be an answer to those who traded their 04/05 model for an 06+ model and wondered why their mpg is so different. __________________ 2005 Tideland Pearl Premium Package as of 25th Oct 2004 VVT-i Emblem, Sport Pedals, OEM All-Weather Mats, Cargo Mat, EV Mod, JDM Prius Interior Footwell Lighting, DICE iPod Integration Kit, LED licence plate lights, Phillips X-Treme Power H4 2008 smart fortwo passion coupé as of 28th Apr 2008 Fogs, dash pods, leather, rubber mats, Brabus handbrake, LED licence plate lights & dome lamp

02-10-2007, 04:30 AM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 12,829 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 20	I thought it was calculated from fuel flow to cylinder #1.

02-10-2007, 10:33 AM	#3
KTPhil Senior Member Join Date: Jan 2005 Posts: 1,200 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	"he got it off his dealer." ...the LEAST accurate source of informatin on the planet.

02-10-2007, 01:54 PM	#4
Tideland Prius Super Moderator Join Date: Oct 2004 Location: Canada Posts: 13,370 My Car: 2005 Prius Package: B Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 10	<shrug> Don't shoot the messenger....<_<

02-10-2007, 04:28 PM	#5
KTPhil Senior Member Join Date: Jan 2005 Posts: 1,200 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Nahh, it's the dealers most of us want to shoot!